Grain door



J. MCMUHDO.

GRAIN DOOR. APPLICATION FILED MAR. I4, 1921.

l 944,266 Patented Aug., l, 1922.

I :LIlllIIIIIIIIIIIIIIIIIIIIIIIIIIIlill mi@ .Il M t N u rd o my 1/ t 4, 4

I. McIVIURDO.

GRAIN nrooR. APPLICATION FILED MAR. I4, I92I.

Patented Aug. M1922.

www@

2 SHEETS-SHEET 2.

0. w wm.

Wam T@ m J. IVIc IVIUrdo V "I JOHN VIGMURDO, 0F WINNIPEG, MANITOBA, CANADA.

saam noon.`

iaaaaoe.

Application filed March 14, 1921.

( 1o all whom it may concern Be it known that I, JOHN Meli/Inmo, ya subject of the King of Great Britain, and resident of the `city of linnipeg, in the Province of lillanitoba, Canada, vhave in vented certain new and useful Improvements in Grain Doors, of which the following is the specification. v

The invention relates to improvements in grain doors as used on the standard type of grain car and an object ot theinvention is to provide a `simply constructed, and inexpensive appliance for fastening the door closed and to arrange the appliance so that it can be readily locked or released as occasion demands and also to construct the appliance so that it can be readily tted on the car.

WVith the above more important objects in view the invention consists essentially in a pivoted and vertically shiftable wing located on one of the door posts and provided near the bottom with a catch shoulder, the post being apertured to receive the wing and a locking plate countersunk in the door sill and provided with slots tor receiving the lower end oit the wing, the parts being arranged and constructed as hereinafter more particularly described and later pointed out in the appended claims, reference being had to the accompanying drawings in which Fig. 1 is an exterior view oi a car fitted with my invention.

Fig. 2 is an interior view.A

Fig. 3 is an enlarged detail horizontal'sectional view through the door and adjoining posts.

Fig. 4 is an enlarged detail vertical sectional view through the door and looking towards the wing.

Fig. 5 is a vertical sectional view at 5--5 Figure 4.

Fig. 6 is a perspective view oi the locking plate.

In the drawings like characters of reference indicate corresponding parts in the several figures.

1 and 2 represent the customary door posts of a grain car, 3 the sill and l the upper cross beam or lintel, such parts bounding the doorway opening 5. The door post 2 is provided with a vertical groove 6 adapted to receive one end of the grain door 7. In the present instance the groove is formed by ver- Speecaton of Letters Patent.

Patented Aug, 1, 1922.

serial no. 452,378.

tically channelling the post and facing it with a metallic wearing plate 8 which has the inner edge lapped around the inner face of the post and suitablyl `fastened thereto, the lapped portion of the plate preventing any possibility of nailing the door to the post.

Here it is to be noticed that the metal faced channel so provided presentsv a vertically extending outer bearing wall 8 against which the end of the door is engaged and an inclined wall 82, the inclined wall allowing of theV free escape of the latter end o1- the door when the other end is released as hereinafter described.

The post 1 is cut away to admit a vertically extending pivot rod 9, the lower end of the rod being mounted in the sill whilst the upper end is mounted in the upper end ot the recess formed inthe post. On the rod I mount pivotally a wing 10 which in the present instance is formed from a comparatively stiff metallic plate having one edge curled or bent around the rod and the other edge eX tending tangentially from the rod.

The wing not only pivots on the rod but is ,tree so that it can slide a limited distance vertically and it is provided towards the lower end with a plate 11 whereby it can be raised with a crow bar or like tool.

@n the sill beneath the wing I mount a locking plate 12 which is countersunk in the sill so that the upper tace thereo'l lies flush with the upper tace of the sill. The plate is provided with a central opening 13 and two slots ll'and 1'5`communicating with the opening and positioned at right angles 'to the same, the slot 15 passing lengthwise of the sill, whilst the slot 14 extends outwardly. The opening 13 is provided to receive the edge of the wing when the same is lowered on the spindle or rod and the slots 15 and 14 receive the extending edge of the wing when it is in what might be termed the door locking and releasin positions respectively. Here I mightexp ain that one end of the door 7 is adapted to engage with the wing when the wing is extended in the slot 15, the arrangement being such that the said engaged end of the door is prevented from swinging outwardly by the locking of the wing in the slot 15. The inner face of the post 1 is provided with a protecting plate 16 which overhangs the edge of the door and.

forms with the locked wing a vertical chan-` nel :for receiving the said end of the door.

The post 1 is recessed to receive the wing when the same is turned outwardly, it being desirable that the wing lie flush with the face of the post in such out-turned position.

When the door is placed in position thel right hand .end is inserted in the channel of the postfZ` and the lett hand end is swung in against the plate 16, the wingV at this time being turned outwardly iiush with the post 1. Then they wing is raised to allow `the lower end thereof to pass out of the slot 14E and it is turnedl inwardly to engage the end oli the door and is locked in, this position bysliding After locking the doorin 'this manner the grain isy put into the car, it being of course understood that the customary top door section (not shown) 'isused.

When it is` desired to' open the door a tool such as a crow bar is rested on the sill with the end underneath the shoulder 11 and the outerend of the bar is V:forcedI down` to pry up the wing and release it from the slot 15. This releases the door to swing'outwardly under the pressure of thev grairniinfthe car7 the freed vwingbeing forcedv by the door out wardly against the face of the post, inwhich position it will drop and lock itself in the slot 14. -V

-From the above it will be obvious that this invention canV be readily applied on existing types of ycars and' without ,requiring much alteration thereof.

Further, the arrangement is an extremely simple and inexpensive one and does 4not requirea special door to be built, Vit being rather more of a iittingto the post than a part of the door structure.

Further, it formsl ak quick and positive lock for the door and is so arranged that the door can be immediately released by the simple use of a crow bar or similar tool.

Whilst I have shown the special plate for application on the door sill, I wish it to be understood that where sills are already protected by a `wearing plate passing the full length of the sill. the opening 13 and slots 14: and 15 could he formed in such plate.

it downwardly on the rod and into the recess" wing and provided with a central opening.4

and-slots extending from the opening, the said' slots and opening being adapted to receive andk lock the lower end of the wing against movement and in positions substantially at-right angles one from the other and a plate located on the lower end of the wing. l 2. In a car door fastening, the combinationy with a door post presenting an abutment for one side of the door of a wing connectedv `to the post to cooperate with said abutment and hold said door in place and a member at one end of the wing presenting angularly related channels in which `the wing is selectively engageable, whereby the wing is adapted to be immovably held in operative 0r inoperative position, the connection between the wing and post permitting the wing to have the necessary movement for selectively engaging the same with the channels. r

3. In a door fastening7 `the combination with a door post presenting anabutment engageable with one side of the door, of a wing adapted forv engagement` with the opposite side of the door, a verticalv pivotrod connecting the wing to the post ior swinging and endwise sliding movement, a'plate at the lower end of the pivot rod formed with angularly related slots with which the lower end of the wing is adapted to `be engaged, whereby the wing may be immovably held either in operative or inoperative position.

Signed at Winnipeg, this? 16th day of February, 1921. v e n JOHN MGMURDO.

In the presence of-V f GERALD S. ROXBURGH, K. B. WAKEFIELD. 

